diff --git a/static/js/app.js b/static/js/app.js
index 1303ea9..d409ff0 100644
--- a/static/js/app.js
+++ b/static/js/app.js
@@ -207,6 +207,12 @@ function openFeed(feed) {
                 topBarTitle.innerHTML = `RSS Reader <span class="feed-title-separator">-</span> ${feed.name}`;
                 // Update the browser document title
                 document.title = `RSS Reader - ${feed.name}`;
+
+                // Close sidebar if on mobile
+                if (window.innerWidth <= 768) {
+                    const sidebar = document.getElementById('sidebar');
+                    sidebar.classList.remove('active');
+                }
             } else {
                 console.error('Failed to poll feed:', response.status);
             }